constancy vs disaffection

constancy

noun
  • The quality of being constant; steadiness or faithfulness in action, affections, purpose, etc. 

  • An unchanging quality or characteristic of a person or thing. 

disaffection

noun
  • Discontent; unrest. 

  • Alienation; loss of loyalty. 

How often have the words constancy and disaffection occurred in a corpus of books? (source: Google Ngram Viewer )